MAX8759 Maxim Integrated Products, MAX8759 Datasheet - Page 25

• Manufacturer Part Number: MAX8759
• Description: CCFL Backlight Controller
• Manufacturer: Maxim Integrated Products

The identification register contains two bit fields to
denote the manufacturer and the silicon revision. The bit
The ALS should return a value reflecting the brightness
setting based on the ALS input. The register has 8 bits
that define a full range of 256 brightness levels. The
The value in this read-write register reflects the lowest
possible brightness value the inverter can set based on
inputs from the ALS. Users can change this value so that
they can control the effect of ALS. A write-byte cycle to
register 0x05 sets the lowest possible brightness value
ALS[7..0]: 256 steps of ambient-light sensor reading.
MFG[4..0]: Manufacturer ID (the vendor ID for Maxim is 0).
REV[2..0]: Silicon rev (revs 0–7 allowed for silicon revisions).
ALSLL[7..0]: The lowest brightness setting that can be set based on ALS inputs.
BIT 7 (R/W)
BIT 7 (R)
BIT 7 (R)
ALSLL7
MFG4
ALS7
Low-Cost, SMBus, CCFL Backlight Controller
ALS Low-Limit Register [0x05] (POR = 0x00)
Identification Register [0x03] (POR = 0x01)
ALS Status Register [0x04] (POR = 0x00)
BIT 6 (R/W)
BIT 6 (R)
BIT 6 (R)
______________________________________________________________________________________
ALSLL6
MFG3
ALS6
BIT 5 (R/W)
BIT 5 (R)
BIT 5 (R)
ALSLL5
MFG2
ALS5
BIT 4 (R/W)
BIT 4 (R)
BIT 4 (R)
ALSLL4
ALS4
MFG1
BIT 3 (R/W)
field widths allow up to 32 vendors with up to eight sili-
con revisions each. This register is read only. A write-
byte cycle to register 0x03 has no effect.
register is read only and a write-byte cycle has no
effect. A read-byte cycle to register 0x04 returns the
current reading of ALS, regardless of the operating
mode set in register 0x01.
that can be set based on ALS inputs. If the brightness
setting due to ALS is lower than the value written to this
register, the inverter immediately increases the bright-
ness setting to the newly written value. A read-byte cycle
to register 0x05 returns the current minimum brightness
value that can be set based on ALS inputs.
BIT 3 (R)
BIT 3 (R)
ALSLL3
ALS3
MFG0
BIT 2 (R/W)
BIT 2 (R)
BIT 2 (R)
ALSLL2
ALS2
REV2
BIT 1 (R/W)
BIT 1 (R)
ALSLL1
BIT 1 (R)
ALS1
REV1
BIT 0 (R/W)
BIT 0 (R)
BIT 0 (R)
ALSLL0
ALS0
REV0
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